Have just updated to v2.7.1 and decided to buy the revolution slider now it has been totally revised. It is awesome and for only $19 with automatic updates it is definitely worth it.
It also comes with free slider templates of all varieties to choose from if you don’t want to build from scratch. The only downside I can see is that it looks way different from pre version 5 slider, a bit of a learning curve, but it does come with documentation.